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Thanks jghrist. Actually, we are doing resistance test and temperature test on these joints. We are also computing for the ratios of joint resistance against conductor and also temperature ratios. Our main concern is in the evaluation of computed ratios. To date, I am trying to find out if there...

Thanks apowerengr. However, did you use any criteria or standards in determining the pass and fail condition of these joints? Are there bounderies of measured resistance? By what percent to that of the conductor resistance?

Guys, how do you characterize full tension compression splices as to its electrical resistance and temperature measurement? Are there standards as to the limits of its resistance and temperatures? Thanks in advance.

Thanks a lot everyone! electricpete, where can I find these EPRI documents? Any website? What I'm actually looking for is a documented reference on assessing the condition of porcelain insulators through UV or Ultrasonic scanners by earial patrol.

Guys, Could you please help me find some technical papers on Transmission line Maintenance through helicopter patrol. Such maintenances that include perhaps thermal scanning, ultrasonic scanning, etc. I need it to convince my supervisor that there are really industries who are already using...

Voltages, Aside from hotspot test, do you do also testing on insulators (suspension/strain type, post insulators, polymer type)?

Thanks a lot everyone. Now I have to do some readings.

dpc, I've already got a site at www.powermaintenance.com. If you have other good references pls share. I need it in my study of transmission lines.

Can you please help me find documents, references or manuals for effective maintenance of transmission lines? Thanks in advance.

Thanks for the reply jghrist. My next question is: How to determine the zero sequence reactance with respect to the size and orientation of the overhead ground wire?

In a 3-Phase power transmission line, is the overhead ground wire has an effect on the overall transmission line impedance? Kindly enlighten me. Thank you.